/Engine/Plugins/FX/Niagara/Source/Niagara/Public/NiagaraTypes.h
Any change to this structure, or it's GetVariables implementation will require a bump in the CustomNiagaraVersion so that we properly rebuild the scripts You must pad this struct and the results ofGetVariables()to a 16 byte boundary.
struct FNiagaraSystemParameters
int32
_Pad0
int32
_Pad1
int32
CurrentTimeStep
int32
EngineAliveEmitterCount
int32
EngineEmitterCount
uint32
EngineExecutionState
float
EngineLodDistance
float
EngineLodDistanceFraction
float
EngineSystemAge
int32
EngineTickCount
float
EngineTimeSinceRendered
uint32
NumParticles
int32
NumTimeSteps
int32
RandomSeed
int32
SignificanceIndex
float
TimeStepFraction